All Questions
Tagged with vmware-esxi centos
57
questions
0
votes
1
answer
259
views
Something is closing connections in my CentOS VMs - how to best troubleshoot?
I have a setup with 3 VMs (1 application server on CentOS6 and 2 database servers on CentOS7). The last 1-2 weeks we have had issues with timeouts when connecting to the database servers (and between ...
- 203
0
votes
1
answer
395
views
Centos8: VM broken after moving from VMware ESXi to HyperV [closed]
I have moved Centos8 VM from ESXi to the HyperV 2019 core (hdd only)
It seems the disks or partitions IDs are broken so it's not staring up properly using default/first Grub menu option.
But it runs ...
- 151
0
votes
0
answers
2k
views
Issues getting networking working Packer VSphere-ISO Centos 7
While new to Packer and Kickstart scripts, I am trying to automate the setup of CentOS 7 (eventually 8) boxes in a VSphere cluster. My Packer code is calling a Kickstart script to complete the setup, ...
- 101
1
vote
0
answers
27
views
DD data of drive to new drive within VM
I inherited a CentOS 7 vm with a messy disk system. Here's a breakdown:
The VM has 2 hard disks, and the OS has two LVs with luks-encryption on top. Output from lsblk:
NAME ...
- 412
1
vote
0
answers
551
views
LVM not booting after VM migration from KVM to VMWare
I've migrated a VM from an old system based on Centos and KVM.
The VM itself is also based on Centos.
The VM had 4 disks in it and those are still being kept, everything was basically converted.
The ...
- 11
4
votes
1
answer
371
views
ESXi vmware tools recognises CentOS 7 as CentOS 6
I am using vmware Remote Console (VMRC) to access a virtual machine running CentOS 7 with the included open-vm-tools 10309 which are recognised by the ESXi-host.
I am able to shutdown or restart the ...
- 193
2
votes
0
answers
415
views
fstrim is not functional after migrate to vmfs6 without reboot
I have Vmware esxi 6.5. Now I migrated some thin provisionied VMs to VMFS6. When I call fstrim /I can except that vmdk file will smaller, but without error in console - vmdk is not smaller. I must ...
- 417
2
votes
2
answers
3k
views
DHCP not sharing Internet access
I have several Virtual Machines in Vmware ESXi 6.5 with 2 Network Groups.
Created a DHCP Server Machine on CentOs with 2 networks interface.
1 / vm network from which it takes a network and has IP ...
- 23
-1
votes
1
answer
1k
views
How to enable IBRS when it is disabled?
I have been updating some servers to the latest patchlevels and wanted to check the security state regarding Meltdown, Spectre and Spectre-NG.
Using the current V 0.39+ of the spectre-meltdown-...
- 7,725
-1
votes
1
answer
325
views
Connect ESXI directly to Centos server for NFS datastore
In my office we have a server that is running VMware ESXi 6.5.0 and a Centos 7 Server.
The plan is to set up a datastore for the VMware installation on the Centos server using an NFS share. Is it ...
2
votes
3
answers
24k
views
CentOS 7 timing out while yum update
I have been going with this error for the past couple of days. When I do a "yum update" or basically any "yum" command, it is timing out and taking a real long time or basically stop it. I went ...
- 27
-1
votes
1
answer
109
views
ESXi 6 (U02) connect to LAN (Windows VM ok, Centos is not)
I have strange network issue with ESXi 6.0 U2 intallation on DELL R720 server with 4 nics.
I used vmnic0 for installation and networking is fine (can access network, ping, etc.. subnet 172.16.x.x/24)....
- 1
2
votes
1
answer
602
views
The mystery of the bad CentOS template - all VMware VMs based on this template crash sometimes
I have a template from CentOS 7 (1602) that I have deployed roughly 200 VMs using it until I noticed the issue, so it would be ideal to fix these VM's rather than start from scratch.
The VM's '...
- 918
3
votes
1
answer
330
views
Backup CentOS VM on Remote Server without snapshots
I have a VM with CentOS Server installed, which is for Email and Web Services, on a free esxi. The entire esxi has 2 TB usable and the CentOS server has 1.5 TB provisioned. Another CentOS VM that runs ...
- 41
1
vote
1
answer
410
views
CentOS 7 in an ESXi VM cannot see port 80 requests
I am running CentOS 7 in an ESXi VM. I have disabled iptables and selinux. And I am simply trying to run Apache on this version of CentOS 7, which I think is working fine:
[root@am1 etc]# systemctl ...
1
vote
4
answers
6k
views
Extremely slow disk speeds Centos 6
Setup looks as follows:
HP Proliant DL380 G7
6 x 3TB Sata drives (surveillance level) configured with hardware RAID 1+0 with the SATA controller on board. Model is Seagate SV35
192GB RAM
VMware ...
- 260
1
vote
1
answer
220
views
VMware Guest machine NIC errors
I am running Linux CentOS 5.11 with 32bit Arch I have seen NIC generating many interface errors
[root@centos5 ~]$ /sbin/ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:97:C0:0E
...
- 692
1
vote
2
answers
4k
views
CentOS 7 loses connectivity all the time after moving it from VMware workstation to ESXi
I have installed CentOS 7 x64 on VMware workstation 12.0, I built wordpress website on it and then after my colleague finished his decorative work, I used VMware vCenter Converter Standalone Client 6....
- 51
1
vote
1
answer
5k
views
Centos 7 + ESXi 6: intermittent freezes with sd 0:0:0:0: [sda] task abort on host 0
I just installed ESXi 6 and I'm preparing a Centos 7 VM but it's having some strange problems.
It randomly freezes any I/O operation that it's doing and keeps showing the following message in dmesg:
...
- 1,199
0
votes
0
answers
503
views
ESXi 6.0: halt command doesn't work in Centos VMs
I have a ESXi 6.0 Hypervisor ( latest version as of today ) and i'm having some problems with Centos VMs.
"halt" command simply doesn't work. The VM will remain powered on but totally frozen ( ...
- 1,199
0
votes
1
answer
215
views
CentOS VM deployed on ESXi 5.5.0 has no IPv4 address
This is what I have tried:
I deployed a Centos7 VM on my friend's ESXi 5.5.0 and it works fine.
I install the same copy of ESXi on my desktop and migrate my VM to my own newly installed ESXi server. ...
- 139
-4
votes
1
answer
587
views
Bare Metal Provisioning [closed]
For bare metal provisioning of:
VMWare ESXi
Ubuntu
CentOS
Are Ubuntu MAAS and Spacewalk the only Open Source options for bare metal provisioning or are there other non-proprietary options?
The ...
- 117
7
votes
1
answer
11k
views
How can I confirm if my vmxnet driver is installed on my CentOS server?
I have an appliance running CentOS 5.x on VMWare ESX.
Quite recently I upgraded it to a newer version of CentOS (still in 5.x) and I noticed that the network card wouldn't initialize.
If I run ...
- 11.9k
0
votes
1
answer
354
views
deploy physical server from vmware template (linux)
I've been looking at replacing several aging servers, and to that end, I've prepared a vmware template to act as a standardized base. However, it's now become a requirement that I be able to deploy ...
- 31
4
votes
1
answer
3k
views
What is the proper way to shutdown an iSCSI target with connected clients?
iSCSI with two DRBD primary nodes is a bad idea to use if the two paths get concurrent write requests. But I am thinking about using this idea as backend storage for an ESXi 5.5U2 host.
I already did ...
- 7,725
0
votes
1
answer
2k
views
conflict in network interface configuration of CentOS 6.5
I am trying to create 2 network interfaces, one with DHCP and the other with static IP on a CentOS VM running on ESXi Server.
Content of file ifcfg-eth0 is as follows:
DEVICE=eth0
ONBOOT=yes
...
- 3
-5
votes
1
answer
289
views
ESXI/CentOs Cannot connect to internet [closed]
I installed CentoS on a vm. I have use the netinstall. During the install i configure my network with:
IP Adress: 195.154.32.33
NETMASK: 255.255.255.255
GateWay: * same Gateway of my esxi server*
...
- 111
1
vote
1
answer
127
views
Many writes IO/s in Centos 6.5 - reverse ratio from read - as is normal
We have many CentOS6.5 servers on ESXI5.5. Storages for vmdk is SAN ISCI. I have problem with bad ratio for write/read.
On storages I have about 2500 write io and e.g 200 read! For all time in day. ...
- 417
0
votes
1
answer
72
views
CentOS extend home partition multiple times
I allow my clients to ask an unlimited number of times to extend the hard drive. Although, after 2 times, there is no physical volumes left to create. How can I still extend sda1 or sda2? Is it ...
- 145
0
votes
1
answer
2k
views
CentOS Virt-v2v conversion tool
I am trying to use the virt-v2v tool in CentOS for the conversion of virtual to virtual and eventually physical to virtual machines. I am rather confused after spending a day trying to get the virt-...
- 111
3
votes
1
answer
331
views
Recommended version of vmtools for Ubuntu?
When I browse VMware's VMtools repository I see that they are up to date on CentOS, but not on (any version?) of Ubuntu.
http://packages.vmware.com/tools/esx/5.5latest/ubuntu/dists/precise/main/...
- 10.4k
6
votes
4
answers
20k
views
kernel warning in logs: set_rtc_mmss can't update from 0 to 58
I've been seeing a bunch of these log messages
Jan 3 00: 58: 57 foo kernel: set_rtc_mmss: can't update from 0 to 58
They occur on CentOS 6.4 VMs running on VMware. I understand it's something to do ...
- 3,984
0
votes
2
answers
5k
views
"Insufficient Resources" general system error when starting ESXi VM through Vsphere client
I'm trying to set up a CentOS installation on my ESXi host using VMware VSphere client, and despite my efforts, I continually receive an error. After creating the VM and attempting to start it for the ...
- 123
1
vote
1
answer
3k
views
CentOS No Login Prompt After rc.local Executes
This is a CentOS 6.4 server with no GUI. After rc.local executes in the boot sequence, I am not presented with a console style login prompt. I can type characters on the screen but there is no login ...
- 255
0
votes
2
answers
1k
views
How to reclaim disk space on ESXI 5.0 [duplicate]
I have a DELL R710 with ESXI 5.0. I've created a VM with 100GB thin provision. I deleted most of the data. Is it possible to shrink the VM folder on the ESXI?
thanks!
Dotan.
- 1,906
0
votes
1
answer
2k
views
should I use thick or thin provisioning
I have a linux vm with 40GB Thick provision Eager Zeroed.
when I login to my ESXI Server I can see that the folder of the VM is about 40GB.
I've created a 10GB file on the linux VM machine. I see ...
- 1,906
1
vote
4
answers
6k
views
how to expand disk on ESXI 5 linux VM?
I have created a LINUX machine with 2 disks.
the 2nd disk is 100GB /wdata THIN provisioning. I stopped the VM and changed DISK02 to 200GB instead of a 100GB).
when I do /proc/partitions I see /dev/...
- 1,906
0
votes
1
answer
413
views
config linux router to allow ftp
I recently setup ESXi on a dedicated server and I tied to use /29 IP subnet for my VMs, due to datacenter policies I have to run A router-VM on my ESXi to route traffic to/from VMs.
I get a single IP ...
- 69
0
votes
3
answers
2k
views
RHEL 6 TFTP server on VMware vSphere 5 not accepting files from remote clients
I can put a file successfully from localhost. If I try from another host the client connects and the file is created on the server, but it is empty. The transfer then times out a little later.
On the ...
- 523
7
votes
2
answers
18k
views
Can I safely increase the number of processors on a VM?
I have several Windows 7, CentOS, and Ubuntu virtual machines running within a VMWare ESXi server. To get better performance while building on them via Jenkins, I would like to increase their number ...
- 207
0
votes
1
answer
1k
views
Issues migrating a CentOS 4 xen guest to VMWare
I am migrating a xen guest. It is running a CentOS 4. I am using the same steps that have worked in the past for our RHEL5 and RHEL6 based systems but for some reason, I'm getting errors.
Here are ...
- 10.9k
6
votes
1
answer
2k
views
Random and Selective ARP blindness in VMWare ESXi 4.1
We have multiple VMWare ESX servers spread out amongst our company, doing various tasks. One particular ESXi host is exhibiting very peculiar behavior. We detect it when our monitoring system (Orion)...
- 3,456
3
votes
2
answers
3k
views
Drupal on an NFS share has terrible performance
We have a setup where a Drupal 7 site with the following setup - a VMware ESXi 4.1 host server running a web vm and an NFS VM. The web VM is using Apache and mod_php. The site is still in development ...
- 175
9
votes
2
answers
3k
views
VMware vCenter/ESXi with FreeIPA instead of Active Directory?
Can vCenter authenticate against FreeIPA instead of Active Directory? If so, how would you set it up?
We have a pure Linux environment (CentOS) and need to have vCenter and our VM's have the same ...
- 1,942
-5
votes
2
answers
186
views
huge amount of TCP connections on 1GE port [closed]
I have a Rackmount server with ESXI 4 and on top I have 12 VMs with Centos 5.X.
I have 2 CPUs with 6 core each (total of 12) and 40GB of RAM.
all VMs are connected on one 1GE port.
I need to know if ...
- 1,906
4
votes
2
answers
174
views
Vmware sphere setting up external network
I've just setup vmware vsphere 5 on a remote server (rented dedicated server). I've added my first VPS (centos 5.8) barebones. It's not finding any IP (internal or external) on boot. I've had an extra ...
- 415
2
votes
2
answers
3k
views
P2V Wouldn't Boot, Rebuilt initrd, Need to Clean Up
We have a CentOS 5.4 server (build 2.6.18-164.el5xen).
We went to P2V this server so we can have redundancy, the physical only has one PSU.
The P2V only completed 99% of the way, we have a VMWare ...
- 159
2
votes
6
answers
20k
views
How to install VMWare ESXi CLI on CentOS 6.0?
I'm trying to install VMware-vSphere-CLI-5.0.0-422456.x86_64 onto CentOS 6.0 64bit, but the installer complains:
CPAN not able to install following Perl modules on the system. These must be
...
- 9,153
1
vote
1
answer
1k
views
Fresh CentOS 6.2 / Ubuntu Server Installation on VMWare ESXi - can connect to LAN net but not Internet
I have configured a fresh CentOS 6.2 installation on VMWare ESXi with an E1000 NIC, static IP, defined a correct default gateway, subnet mask, and DNS servers.
I use a pfSense as my virtual router/...
- 3,250
0
votes
1
answer
2k
views
How to make Yum work on virtual centos 6 on ESXi behind proxy?
I have ESXi in my LAN. All traffic from LAN is passed through a proxy. After installing Centos (network card in bridge)(VM on ESXi) I modified yum.conf for using proxy
proxy=http://myproxy:3128/
...
- 5,248